ActionScript 3.0 :: Class Extension And Library Symbols
Jan 23, 2008
I've got a question which is primarily an OOP question, but it is specific to AS3 in it's implementation.
I writing an interface which consists of displaying a (circuit) card rack which holds twenty cards of various types. Some of the properties of the cards are common to all cards such as slot number, card type, id, etc. They also behave similar when clicked on, taking you to another view.
It seems to make sense to create an abstract class (Card) that has all the common properties and behavior of all the cards, and then extend that class to create the specific card types, but the problem is that the display objects representing the cards are movie clip symbols in the library.
It boils down to this question: How do I extend a class that is already extending the movie clip class (a symbol in the library)? I know that AS3 doesn't allow it, but I figured someone has probably run in to something like this before.
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Apr 24, 2009
I've started a new cs3 flash file. I've created a few symbols, scattered them about the stage, then gone to start writing my class file. I've created the class fine and i have created an external .as with the same name as the fla file (miniGolf.fla and miniGolf.as). The problem is that i can't link the fla to the .as. Every time I click the little pencil icon I get an error saying:
"You must specify a unique class name that is not associated with any library symbols"
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Dec 20, 2009
Is it possible to inherit the objects of a library symbol?Say I have a symbol named Testwith a red rectangle inside of it (defined in the main .fla file) named Member.
Code:
package
{
[code].....
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Dec 19, 2010
I have an .fla I created a while ago. In it is a movie clip in my library which I now want to use in a new .fla. This movie clip is reliant however on an image which is also in the library. I have tried selected both the image and movie clip, copy them, and paste them into my new library, but this doesnt work. I have tried cutting... I have tried duplicating and copying the duplicate. Nothing seems to work. Is there anyway of getting a symbol from one library into another?
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Sep 16, 2009
Does anyone know if it's possible to have Graphic-type symbols in a shared library as it won't let you add an identifier to them? It's ok to use Move Clips but they increase the file size.
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Mar 21, 2010
When I create a symbol:
1.I can not review it in library window
2.I can not drag the shape that I want to the screen
3.When I drag it to screen , Previous symbol is not a symbol anymore
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Nov 26, 2010
I'm using Flash CS4 with Win7 and if I create a movieclip symbol in an FLA file such class name such as GreenBox. When I put the following line into my actionscipt 3.0 code, I get the error: "You cannot debug this swf because it does not contain actionscript.The line of code is:vargreenBox:Green Box = new GreenBox();Any ideas what's going on. Never had these problems with CS3 and Win XP.I did double check to see if I had the debugger version on Flash Player.
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Apr 26, 2010
how Flash handles garbage collection of the library symbols? E.g. If I attach a Bitmap symbol to a MovieClip symbol(drag to the first frame, MovieClip linked to a MovieClipClass) Is the following enough to make the movieclip eligitable for garbage collection?e.g.
ActionScript Code:
var mc:MovieClipClass = new MovieClipClass();
addChild(mc);
//some time later
removeChild(mc);
mc = null;
I wonder if it will remove the bitmap loaded as well, or at least make it eligitable. I'm loading massive bitmaps, when I create other new MovieClipClass I notice the image loads instantly as oppose to that bit of lag.Or is there a different way to manage the bitmaps for the bitmap symbols?
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Sep 13, 2010
I've created a few symbols (movie clips) in my library. They are basically "panels" for user input etc. I've sized them carefully and do my best to have them stay within a 320x240 size. But when I load them they come in with larger width and height dimensions...as if there are some objects/symbols/graphics that are invisible or something.
This happens with EVERY library movieclip i've created.
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Dec 16, 2010
So I added a bitmap to my library in flash CS5, and in its symbol properties I checked "Export for AS" and "Export in Frame 2" (I set Export Classes in Frame: 2 in AS settings.) On the first frame of my main timeline, I have
Code:
trace("loaderInfo.bytesTotal: " + loaderInfo.bytesTotal);
trace("loaderInfo.bytesLoaded: " + loaderInfo.bytesLoaded);
[code].....
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Jun 8, 2007
i have got a problem with actionscripting.That is i created 3 tab buttons and each tab buttons has got its symbols.I want to drag and drop them onto the canvas ,using drag and drop,but however when i click the second tab button the first symbol that i drag to the stage dissapears?Anyone knows how to make it stay .Is like a Signage developer for LTA(Land Transport Authority) Designer.
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Mar 15, 2011
I have a fairly complex symbol with a few moving parts, and I want to be able to access a label on the symbol to add text. When i just load the clip
PHP Code:
var x = new fm_Input(); // instanc in libraryaddChild(x);
it shows the default text.
[code].....
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May 23, 2011
I have just started using Flash CS5 recently and have a question about the classic tween. I have noticed that when I make a classic tween Flash automatically makes symbols out of my grouped objects. I have worked with previous versions and it was sufficient to just group my objects on the stage to make a tween. Is there a way to turn this feature off? I'm an animator and it's very annoying and messy to make a symbol out of all the objects I want to animate.
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Nov 5, 2011
I have a package that extends my sound class that I want to also control the alpha of an existing symbol on my stage. I have read that this would be ideally done through some sort of event listener but I can't find a way to do it. Basically, my package generates a wavelength that I want to control the alpha of an existing library symbol. I have gotten examples to work the way I wish but can't seem to get my package to access the main .swf's library.
Here's the code:
package {import flash.events.SampleDataEvent;
import flash.media.Sound;
/**
* A dynamically generated binaural beat carrier wave Sound with frequency easing.
*/
[Code].....
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May 24, 2011
I have asked this question in another forum but haven't got an answer yet. I have just started using Flash CS5 recently and have a question about the classic tween. I have noticed that when I make a classic tween Flash automatically makes symbols out of my grouped objects. I have worked with previous versions and it was sufficient to just group my objects on the stage to make a tween. Is there a way to turn this feature off? I'm an animator and it's very annoying and messy to make a symbol out of all the objects I want to animate.
When I add a tween (CS3) I always used the Properties panel and choose "motion" from the tween settings. This way there's no symbols added in the library. Just noticed that there are also tween symbols added if I add a tween using right Mouse click or via the menu Insert>Timeline>CreateMotionTween. Never used this before. But I can't seem to see any tween settings on the properties tab anymore in CS5.
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Oct 6, 2011
I would like to keep my project library tidy, which means deleting symbols I end up not using. However, I want to be able to find these symbols later in case I do end up wanting to use them for a related project. Can I create a library outside of a project, so I can drop these items into it for later use?
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Aug 14, 2010
I am loading an external SWF containing uninstantiated MovieClip Symbols. I can get the SWF loaded, no problem. If I call:loader.contentLoaderInfo.applicationDomain.getDefinition( "TestClip" ) as ClassI get the class of a Library symbol called "TestClip", which I can then instantiate. Jawesome.The issue I'm having is that basically I want to have access to all of the Library symbols without needing to explicitly know their names. I was hoping to use:
describeType( loader.contentLoaderInfo.applicationDomain );
...to get reflective access to the Library symbols, but the XML returned doesn't seem to include any references to them. Perhaps I'm calling it on the wrong object? I also don't want to have to explicitly create coded instances to gain access. This is for a tool for Flash artists, and it's important to avoid code, even simple code.
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Feb 5, 2012
I have Main.fla and SkinA.fla. Both have MovieClip library item: MC_BrandLogo.I'm loading the SkinA.swf into Main.swf in the current application domain trying to replace the class inside Main.swf. If there is no library item in the Main.fla, I can instantiate MC_BrandLogo with the correct graphic. If the MC_BrandLogo already exist in the Main.fla then that graphic is used even though I loaded new one in the current application domain.Is there a way to replace existing linked movie clips with loaded dynamically?
var loader:Loader = new Loader();
loader.contentLoaderInfo.addEventListener(Event.COMPLETE, onSkinLoaded);
var context:LoaderContext = new LoaderContext(false, ApplicationDomain.currentDomain);
[code].......
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Feb 10, 2010
I created an AS3 preloader, and placed the code for that on frame one. I then made a symbol, and placed it in the library. It was set to NOT export on frame 1, and the fla's settings had all classes exported on frame two. There were no references to the object until frame two. Then, flash crashed whenever I compiled without the "Export in frame one" box checked. To fix this, a friend suggested I start my game logic on frame 3, so it will have properly loaded frame 2. That seemed to work fine, the class was instantiating properly. Then, it turned out that it was not loading the movieclip, only instantiating the class. Again, this could be fixed by exporting in frame 1, but I really cannot afford to do that.
The same friend suggested I place an instance of the symbol on the stage on frame 3, and perform game logic on frame 4. They said this would initialize the movieclip properly. However, this was not the case. How can I load the entire symbol, graphics and all, without exporting to frame 1? This single symbol will contain probably 10-20 MB of graphics, so it needs to be preloaded. EDIT: To make a long story short, all I need is some way to load a movieclip so it can be used and visible and everything. EDIT: Is there any way to force-load a movieclip via AS3?
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Mar 14, 2012
My workflow usually goes like this: i create a symbol in Flash IDE with textfields, containers, etc. Then I select "export for actionscript" and type in the classname (automatic declaration of stage instances, of course, is off). Then i create a corresponding classfile in FDT and declare all this textfields and other objects that are in my symbol. This is pretty routine and boring process that takes a lot of time.
Is there a way to automate it? Maybe some plugin for flash IDE that will automatically create a class file based on symbol exported for AS?
Update: So, following the answer Pavel fljÅt provided, i wrote my own command to accomplish this task.[URL]..
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Jan 27, 2010
This question stems from this question that I asked yesterday.I've followed Theo's advice and created a .swc with all the common classes and added the .swc as an external library to my module .swf. This all seems to have worked smoothly--I don't get TypeErrors and my classes are all present in the catalog.xml of the .swc file when I unzip it--but now I've encountered a new problem: when I try to link a symbol in the module .fla's library to a base class from my .swc rsl, it says the base class definition can't be found in the classpath. The whole reason I want to use rsls is so I can do this,If I now include the project's source path or the .swc in the normal (not external) library path, will that cancel the sharing benefits of the rsl, or will the compiler still know not to compile the shared classes into the module .swf?
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Feb 13, 2012
I need to change text in all textfields in my .fla file (Flash CS3).Looks like i should call JSFL function "fl.findObjectInDocByType("text", fl.getDocumentDOM())" and it would return all elements, but it returns zero length array. I there any another way to iterate threw all library items, and change values of TextField's in MovieClips ?
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Apr 2, 2010
I'm building a video player using Flash CS4 (hereby referred to as "Flash") to create the graphic symbols and compiling and debugging with Flash Builder 4 ("FB4"). Here are the steps I take in my current workflow: --Create the graphic symbols in Flash. I've created a few different symbols for the player, but I'll focus on just the play/pause button ("ppbutton") here. --In the Library panel, I go to the ppbutton symbol's Linkage properties and link to a class named assets.PlayPauseButtonAsset that extends MovieClip. I do not actually have an assets package nor do I have a class file for PlayPauseButtonAsset as Flash will create them for me when I publish.
--In Flash's Publish settings, I set the project to export a SWC that will be used in FB4, called VideoPlayerAssets.swc. --After the SWC is created, I create my FB4 project called "VideoPlayer" and add the SWC to my path. FB4 creates the class VideoPlayer in the default package automatically. --In VideoPlayer.as, I import assets.*, which imports all of the symbol classes I created in Flash and are available via VideoPlayerAssets.swc. I can now instantiate the ppbutton and add to the stage, like this:
[Code]...
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Nov 5, 2011
I have a list of 700 words that I would like to convert to symbols in Flash for a flash card game. I'm trying to make a game where a random symbol from a slice of the array of symbols will come into game play until the user performs an action.Basically, I'm wondering how I can create an arrayed/indexed library of symbols from a dictionary, for a downloadable Flash game. Does anyone know how I could start to script this? Also, if I want to pair a 'word symbol' with its translation, do I need to use a database? Obviously, because it's a flash-card type game I'm working on, the translated symbol is just as valuable as the original-language symbol.
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Sep 20, 2011
Is there a way to search for symbols by the class they are using? I have a large projectand at times (specifically when refactoring)
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Jul 25, 2011
In my library I have a few symbols (with diffrent graphics) that I want to share the same class (the same methods I written in as3).
First I tried to set the same name on the class line when converting to symbol but Flash then tells me that the name have to be unique. So I tried diffrent ways of inherit the class in each symbols custom class, but I didn't get that to work either..
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Apr 9, 2011
Is there a way for 1 class to have multiple symbols, (not individual instances but symbols) Or should I just make a major Class with minor classes extending that one class?
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Nov 8, 2010
I frequently create a lot of Library Symbols, export for Actionscript, letting Flash auto-generate the Class & extending a custom base-class in order to give them all custom functionality w/out having to create a Class for each, and/or without having to create a FactoryClass for instantiating X number of ClassObjects for each Symbol to be added to.It's really fast for prototyping, and with this workflow I've only hit a few obstacles. Those are:
1 - If the Symbol has children you cannot give the children instance-names, else the compiler gives an error related to automatically declaring stage instances. Two workarounds for this are that you can uncheck automatically declare stage instances, and do it manually in your base-class. or you can avoid using instance-names, and use getChildAt().
2 - If the Symbol is a MovieClip, the timeline doesn't inherit the base-classes imports. I don't have a workaround for this.are these limitations that could be addressed by Adobe's Flash team, or are they limitations that are unavoidable without altering the workflow?
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Feb 9, 2009
Is there anyway that Actionscript allows multiple symbols to be linked to the same class? This is because the symbols' are diff. in appearance but the same in functionality. It seems a bit redundant to create a new class everytime.
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Mar 29, 2007
I stumbled upon this while trying to customize the tree component following the example on the LiveDocs, see [URL].. To see the problem, do the following:
PART 1:
1) create an empty test.fla file
2) put a tree component on the stage
3) convert it to a symbol named TreeNavMenu, export for
Actionscript as TreeNavMenu
[Code]...
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